Search Results

Search found 25520 results on 1021 pages for 'boost test'.

Page 206/1021 | < Previous Page | 202 203 204 205 206 207 208 209 210 211 212 213 | Next Page >

Mysql server high trafic makes websites really slow or unable to load

- by Holapress

Lately we have been having a lot of problems with our mysql server, from websites being really slow or even unable to load them at all. The server is a dedicated server that only runs our mysql database. i have been running some test using a profiler (JetProfiler) and tool to stress test (loadUI). If I use loadUI to connect with 50 simultaneous connections to one of our websites that runs a resently big query it will already make the website be unable to load. One of the things that makes me worried is that when I look at Jetprofile it always shows a Treads_connected of 1.00 and it seems that when it hits around 2.00 that I'm unable to connect. The 3 big peaks are when I run a test with loadUI, first one was 15 simultaneous connections wich made it still able for me to load the website but just really slow, the second one was 40 simultaneous connections which already made it impossible to load and the third one was with 100 connection which also didn't make it load anymore. Another thing that worries me is that in JetProfiler it says all the queries that get used are full table scans, could this maybe be the problem? The website I run as a test runs 3 queries, one for a menu that outputs around 1000 rows, one for the adds that has around 560 rows and a big one to get posts that has around 7000 rows (see screenshot bellow) I also have monitored the cpu of the server and there seems to be no problem there, even when I make a lot of connections with loadui the cpu stays low. I can't seem to figure out what is the main cause of the websites being unable to load when there is a high amount of traffic, if anyone has other suggestions for testing or something that might cause the problem please let me know.

Read the article
Email Mail Merge via linked Excel sheet

- by Joe Perrin

I have a MS Word 2007 document setup as a Mail Merge doc. I am using Excel as the data source. The MERGEFIELD ClientData contains an Excel file (test.xlsx). I want to merge the data from the Excel file listed in ClientData into the respective Mail Merge document. However, whenever I start the Mail Merge the {MERGEFIELD ClientData} field gets resolved only once and does not select the next row from ClientData. So this: {LINK Excel.Sheet.12 "C:\\path\\to\\file\\{MERGEFIELD ClientData}" \a \f 4 \h} Becomes this after starting the merge: {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test.xlsx" \a \f 4 \h} So every Mail Merge doc uses the test.xlsx instead of the respective Excel document specific to the client (i.e test1.xlsx, test2.xlsx, test3.xlsx, etc.) As the merge runs through each Mail Merge doc I expect to see this: {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test.xlsx" \a \f 4 \h} {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test1.xlsx" \a \f 4 \h} {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test2.xlsx" \a \f 4 \h} {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test3.xlsx" \a \f 4 \h} But for some reason this isn't happening. Does anyone have any suggestions? Thanks!

Read the article
Intranet machines refuse to talk anymore

- by ashes999

I have two machines on the local intranet. They used to be able to talk to each other (ping, share files, etc.). Both are not successfully connected to the internet. The problem machine (lets call it test machine) can't talk to my main machine. The test machine can ping other machines on the intranet (at least one of my coworkers), but not mine. Odd. When I try to ping it from my machine, by machine name, I get Destination host unreachable. Both machines are on the intranet, with the network configured as Work Both machines have Windows Firewall disabled temporarily Both machines can talk to the internet (Google, SO, etc.) Neither machine can ping the other I need help resolving this. What I really want to achieve, is to remote into the test machine from my main machine, like I used to be able to do a few weeks ago. Some notes: Tried arp -a on both machines. I don't see the other machine's IP listed. Both machines have stable IPs; neither seems to have an IP conflict The configuration under ipconfig /all on my main machine mathces my coworker's machine. The test machine can ping his machine, but not my machine. The target machine times out trying to ping the main machine; the main machine gives me Destination host unreachable. I have rebooted both machines (several times) to no avail I have /release and /renewed both machines several times

Read the article
Computer makes odd noise. Replace almost every component. Computer still makes odd noise.

- by ShimmerGeek

My PC was getting pretty old, 5 years or so, and over the course of it's life I replaced the graphics card, HDD and a couple of sticks of RAM; but the PSU, processor, motherboard, fans etc. were all original. A few weeks ago, I started hearing an odd noise. I struggle to describe it, it sounded sortof like the 'click of death' you hear when a HDD may fail, but not quite... (And it was far less irregular) Also, I was sure I heard it once or twice a minute or two after I shut down the PC. This was going on very irregularly for a couple weeks. Some days I would hear no noise at all, others I would hear it often, maybe once every 30 seconds or so. I could find no common denominator - i.e. it did not happen more during gaming or any other intensive use. Anyway, I need my PC to sit some classes over the summer, so I put it in for them to run a HDD stress test and to replace a bunch of the components. I ended up replacing almost everything - the only elements I still have are my blu-ray drive and graphics card. They said when they started to run the HDD stress test it failed instantly (They started the test and it immediately said 'Test Complete' so they assumed it was at fault, and put a new HDD in since I was still under warranty with them.) I took it home a few hours ago, and I am still hearing the noise!!! Do you guys have any theories? I'm getting a little worried, I can't afford for my PC to suddenly fail during the next month - I have a lot of coursework to do. Any thoughts? Is it possible it could be the fan on the graphics card? I'm confused because it's so irregular. Any help would be much appreciated.

Read the article
Sharepoint Error: [COMException (0x80004005): Cannot complete this action.

- by ifunky

Hi, I've created a site basic definition that uses different master and default pages. Everything works quite well except for whenever I create a new site based on the definition I receive the following error when browsing to the new site: [COMException (0x80004005): Cannot complete this action. Please try again.] Please try again.] Microsoft.SharePoint.Library.SPRequestInternalClass.GetFileAndMetaInfo(String bstrUrl, Byte bPageView, Byte bPageMode, Byte bGetBuildDependencySet, String bstrCurrentFolderUrl, Boolean& pbCanCustomizePages, Boolean& pbCanPersonalizeWebParts, Boolean& pbCanAddDeleteWebParts, Boolean& pbGhostedDocument, Boolean& pbDefaultToPersonal, String& pbstrSiteRoot, Guid& pgSiteId, UInt32& pdwVersion, String& pbstrTimeLastModified, String& pbstrContent, Byte& pVerGhostedSetupPath, UInt32& pdwPartCount, Object& pvarMetaData, Object& pvarMultipleMeetingDoclibRootFolders, String& pbstrRedirectUrl, Boolean& pbObjectIsList, Guid& pgListId, UInt32& pdwItemId, Int64& pllListFlags, Boolean& pbAccessDenied, Guid& pgDocId, Byte& piLevel, UInt64& ppermMask, Object& pvarBuildDependencySet, UInt32& pdwNumBuildDependencies, Object& pvarBuildDependencies, String& pbstrFolderUrl, String& pbstrContentTypeOrder) +0 Microsoft.SharePoint.Library.SPRequest.GetFileAndMetaInfo(String bstrUrl, Byte bPageView, Byte bPageMode, Byte bGetBuildDependencySet, String bstrCurrentFolderUrl, Boolean& pbCanCustomizePages, Boolean& pbCanPersonalizeWebParts, Boolean& pbCanAddDeleteWebParts, Boolean& pbGhostedDocument, Boolean& pbDefaultToPersonal, String& pbstrSiteRoot, Guid& pgSiteId, UInt32& pdwVersion, String& pbstrTimeLastModified, String& pbstrContent, Byte& pVerGhostedSetupPath, UInt32& pdwPartCount, Object& pvarMetaData, Object& pvarMultipleMeetingDoclibRootFolders, String& pbstrRedirectUrl, Boolean& pbObjectIsList, Guid& pgListId, UInt32& pdwItemId, Int64& pllListFlags, Boolean& pbAccessDenied, Guid& pgDocId, Byte& piLevel, UInt64& ppermMask, Object& pvarBuildDependencySet, UInt32& pdwNumBuildDependencies, Object& pvarBuildDependencies, String& pbstrFolderUrl, String& pbstrContentTypeOrder) +219 [SPException: Cannot complete this action. Please try again.] I'm able to work around this by checking out the new master page and checking it back in again and after doing so there are no further issues at all. Any ideas to what could cause this? Thanks Dan ONET.XML module section: <Modules> <Module Name="CustomMasterPage" List="116" Url="_catalogs/masterpage" RootWebOnly="FALSE"> <File Url="Shoes.master" Type="GhostableInLibrary" IgnoreIfAlreadyExists="TRUE" /> </Module> <Module Name="Default" List="116" Url=""> <File Url="default.aspx" Name="default.aspx" NavBarHome="True" IgnoreIfAlreadyExists="FALSE"> <AllUsersWebPart WebPartZoneID="Left" WebPartOrder="1"> <webParts><webPart xmlns="http://schemas.microsoft.com/WebPart/v3"><metaData><type name="BCM.SharePoint.Shoes.ShoesComponents.FooterLinks, BCM.SharePoint.Shoes.ShoesComponents, Version=1.0.0.0, Culture=neutral, PublicKeyToken=2881713f39360b71" /><importErrorMessage>Cannot import this Web Part.</importErrorMessage></metaData><data><properties><property name="AllowClose" type="bool">True</property><property name="Width" type="string" /><property name="MyProperty" type="string">Hello SharePoint</property><property name="AllowMinimize" type="bool">True</property><property name="AllowConnect" type="bool">True</property><property name="ChromeType" type="chrometype">None</property><property name="TitleIconImageUrl" type="string">/_layouts/images/BCM_SharePoint_Shoes/wp_FooterLinks.gif</property><property name="Description" type="string">FooterLinks Description</property><property name="Hidden" type="bool">False</property><property name="TitleUrl" type="string" /><property name="AllowEdit" type="bool">True</property><property name="Height" type="string" /><property name="MissingAssembly" type="string">Cannot import this Web Part.</property><property name="HelpUrl" type="string" /><property name="Title" type="string" /><property name="CatalogIconImageUrl" type="string">/_layouts/images/BCM_SharePoint_Shoes/wp_FooterLinks.gif</property><property name="Direction" type="direction">NotSet</property><property name="ChromeState" type="chromestate">Normal</property><property name="AllowZoneChange" type="bool">True</property><property name="AllowHide" type="bool">True</property><property name="HelpMode" type="helpmode">Modeless</property><property name="ExportMode" type="exportmode">All</property></properties></data></webPart></webParts> </AllUsersWebPart> <AllUsersWebPart WebPartZoneID="Left" WebPartOrder="0"> <webParts><webPart xmlns="http://schemas.microsoft.com/WebPart/v3"><metaData><type name="BCM.SharePoint.Shoes.ShoesComponents.SubFooterLinks, BCM.SharePoint.Shoes.ShoesComponents, Version=1.0.0.0, Culture=neutral, PublicKeyToken=2881713f39360b71" /><importErrorMessage>Cannot import this Web Part.</importErrorMessage></metaData><data><properties><property name="AllowClose" type="bool">True</property><property name="Width" type="string" /><property name="MyProperty" type="string">Hello SharePoint</property><property name="AllowMinimize" type="bool">True</property><property name="AllowConnect" type="bool">True</property><property name="ChromeType" type="chrometype">None</property><property name="TitleIconImageUrl" type="string">/_layouts/images/BCM_SharePoint_Shoes/wp_SubFooterLinks.gif</property><property name="Description" type="string">Shoes home page links (under the hero image)</property><property name="Hidden" type="bool">False</property><property name="TitleUrl" type="string" /><property name="AllowEdit" type="bool">True</property><property name="Height" type="string" /><property name="MissingAssembly" type="string">Cannot import this Web Part.</property><property name="HelpUrl" type="string" /><property name="Title" type="string" /><property name="CatalogIconImageUrl" type="string">/_layouts/images/BCM_SharePoint_Shoes/wp_SubFooterLinks.gif</property><property name="Direction" type="direction">NotSet</property><property name="ChromeState" type="chromestate">Normal</property><property name="AllowZoneChange" type="bool">True</property><property name="AllowHide" type="bool">True</property><property name="HelpMode" type="helpmode">Modeless</property><property name="ExportMode" type="exportmode">All</property></properties></data></webPart></webParts> </AllUsersWebPart> <NavBarPage Name="$Resources:core,nav_Home;" ID="1002" Position="Start" /> <NavBarPage Name="$Resources:core,nav_Home;" ID="0" Position="Start" /> </File> </Module> </Modules> LOG OUTPUT: 05/21/2010 12:22:55.11 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 72nz Medium Videntityinfo::isFreshToken reported failure. 05/21/2010 12:22:55.19 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services Fields 88yv Medium Creating default lists 05/21/2010 12:22:55.19 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 72lp Medium Creating directory Lists 05/21/2010 12:22:55.26 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services Fields 88yf Medium Creating list "Master Page Gallery" in web "http://mmm-dev-ll/sites/Shoes/test" at URL "_catalogs/masterpage", (setuppath: "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\Template\global\lists\mplib") 05/21/2010 12:22:55.28 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services Fields 88y1 Medium No document templates uploaded for list "Master Page Gallery" -- none found for list template "100". 05/21/2010 12:22:55.28 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 72kc Medium Failed to find generic XML file at "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\Template\xml\onet.xml", falling back to global site definition. 05/21/2010 12:22:56.22 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services Fields 88yz Medium Creating default modules at URL "http://mmm-dev-ll/sites/Shoes/test" 05/21/2010 12:22:56.22 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 8e27 Medium Ensuring module folder _catalogs/masterpage 05/21/2010 12:22:56.89 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 72h7 Medium Applying template "SubSite#1" to web at URL "http://mmm-dev-ll/sites/Shoes/test". 05/21/2010 12:22:57.09 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services Fields 88yy Medium Activating web-scoped features for template "SubSite#1" at URL "http://mmm-dev-ll/sites/Shoes/test" 05/21/2010 12:22:57.12 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 8l1c Medium Preparing 20 features for activation 05/21/2010 12:22:57.14 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 8l1d Medium Feature Activation: Batch Activating Features at URL http://mmm-dev-ll/sites/Shoes/test 'AnnouncementsList' (ID: '00bfea71-d1ce-42de-9c63-a44004ce0104'), 'ContactsList' (ID: '00bfea71-7e6d-4186-9ba8-c047ac750105'), 'CustomList' (ID: '00bfea71-de22-43b2-a848-c05709900100'), 'DataSourceLibrary' (ID: '00bfea71-f381-423d-b9d1-da7a54c50110'), 'DiscussionsList' (ID: '00bfea71-6a49-43fa-b535-d15c05500108'), 'DocumentLibrary' (ID: '00bfea71-e717-4e80-aa17-d0c71b360101'), 'EventsList' (ID: '00bfea71-ec85-4903-972d-ebe475780106'), 'GanttTasksList' (ID: '00bfea71-513d-4ca0-96c2-6a47775c0119'), 'GridList' (ID: '00bfea71-3a1d-41d3-a0ee-651d11570120'), 'IssuesList' (ID: '00bfea71-5932-4f9c-ad71-1557e5751100'), 'LinksList' (ID: '00bfea71-2062-426c-90bf-714c59600103'), 'NoCodeWorkflowLibrary' (ID: '00bfe... 05/21/2010 12:22:57.14* w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 8l1d Medium ...a71-f600-43f6-a895-40c0de7b0117'), 'PictureLibrary' (ID: '00bfea71-52d4-45b3-b544-b1c71b620109'), 'SurveysList' (ID: '00bfea71-eb8a-40b1-80c7-506be7590102'), 'TasksList' (ID: '00bfea71-a83e-497e-9ba0-7a5c597d0107'), 'WebPageLibrary' (ID: '00bfea71-c796-4402-9f2f-0eb9a6e71b18'), 'workflowProcessList' (ID: '00bfea71-2d77-4a75-9fca-76516689e21a'), 'WorkflowHistoryList' (ID: '00bfea71-4ea5-48d4-a4ad-305cf7030140'), 'XmlFormLibrary' (ID: '00bfea71-1e1d-4562-b56a-f05371bb0115'), 'TeamCollab' (ID: '00bfea71-4ea5-48d4-a4ad-7ea5c011abe5'), . 05/21/2010 12:22:57.15 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 8l1f Medium Feature Activation: Batch Activated Features at URL http://mmm-dev-ll/sites/Shoes/test 'AnnouncementsList' (ID: '00bfea71-d1ce-42de-9c63-a44004ce0104'), 'ContactsList' (ID: '00bfea71-7e6d-4186-9ba8-c047ac750105'), 'CustomList' (ID: '00bfea71-de22-43b2-a848-c05709900100'), 'DataSourceLibrary' (ID: '00bfea71-f381-423d-b9d1-da7a54c50110'), 'DiscussionsList' (ID: '00bfea71-6a49-43fa-b535-d15c05500108'), 'DocumentLibrary' (ID: '00bfea71-e717-4e80-aa17-d0c71b360101'), 'EventsList' (ID: '00bfea71-ec85-4903-972d-ebe475780106'), 'GanttTasksList' (ID: '00bfea71-513d-4ca0-96c2-6a47775c0119'), 'GridList' (ID: '00bfea71-3a1d-41d3-a0ee-651d11570120'), 'IssuesList' (ID: '00bfea71-5932-4f9c-ad71-1557e5751100'), 'LinksList' (ID: '00bfea71-2062-426c-90bf-714c59600103'), 'NoCodeWorkflowLibrary' (ID: '00bfea... 05/21/2010 12:22:57.15* w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 8l1f Medium ...71-f600-43f6-a895-40c0de7b0117'), 'PictureLibrary' (ID: '00bfea71-52d4-45b3-b544-b1c71b620109'), 'SurveysList' (ID: '00bfea71-eb8a-40b1-80c7-506be7590102'), 'TasksList' (ID: '00bfea71-a83e-497e-9ba0-7a5c597d0107'), 'WebPageLibrary' (ID: '00bfea71-c796-4402-9f2f-0eb9a6e71b18'), 'workflowProcessList' (ID: '00bfea71-2d77-4a75-9fca-76516689e21a'), 'WorkflowHistoryList' (ID: '00bfea71-4ea5-48d4-a4ad-305cf7030140'), 'XmlFormLibrary' (ID: '00bfea71-1e1d-4562-b56a-f05371bb0115'), 'TeamCollab' (ID: '00bfea71-4ea5-48d4-a4ad-7ea5c011abe5'), . 05/21/2010 12:22:57.15 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 88jb Medium Feature Activation: Activating Feature 'RadEditorFeatureRichText' (ID: '747755cd-d060-4663-961c-9b0cc43724e9') at URL http://mmm-dev-ll/sites/Shoes/test. 05/21/2010 12:22:57.15 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 75fb Medium Calling 'FeatureActivated' method of SPFeatureReceiver for Feature 'RadEditorFeatureRichText' (ID: '747755cd-d060-4663-961c-9b0cc43724e9'). 05/21/2010 12:22:57.20 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 75f8 Medium Feature Activation: Feature 'RadEditorFeatureRichText' (ID: '747755cd-d060-4663-961c-9b0cc43724e9') was activated at URL http://mmm-dev-ll/sites/Shoes/test. 05/21/2010 12:22:57.51 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services Fields 88yv Medium Creating default lists 05/21/2010 12:22:57.51 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 72lp Medium Creating directory Lists 05/21/2010 12:22:57.51 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services Fields 88yz Medium Creating default modules at URL "http://mmm-dev-ll/sites/Shoes/test" 05/21/2010 12:22:57.51 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 8e27 Medium Ensuring module folder _catalogs/masterpage 05/21/2010 12:22:57.56 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 72ix Medium Not enough information to determine a list for module "Default". Assuming no list for this module. 05/21/2010 12:22:57.87 w3wp.exe (0x1E40) 0x18A4 Windows SharePoint Services General 72h8 Medium Successfully applied template "SubSite#1" to web at URL "http://mmm-dev-ll/sites/Shoes/test". 05/21/2010 12:22:59.48 w3wp.exe (0x1E40) 0x0980 Windows SharePoint Services General 8e2s Medium Unknown SPRequest error occurred. More information: 0x80070057 05/21/2010 12:23:07.06 OWSTIMER.EXE (0x0884) 0x106C Office Server Setup and Upgrade 8u3j High Registry key value {SearchThrottled} was not found under registry hive {Software\Microsoft\Office Server\12.0}. Assuming search sku is not throttled. 05/21/2010 12:23:07.08 OWSTIMER.EXE (0x0884) 0x106C Search Server Common MS Search Administration 90gf Medium SQL: dbo.proc_MSS_PropagationGetQueryServers 05/21/2010 12:23:07.09 OWSTIMER.EXE (0x0884) 0x106C Search Server Common MS Search Administration 8wni High Resuming default catalog with reason 'GPR_PROPAGATION' for application 'SharedServices1'... 05/21/2010 12:23:07.11 OWSTIMER.EXE (0x0884) 0x106C Search Server Common MS Search Administration 8wnj High Resuming anchor text catalog with reason GPR_PROPAGATION' for application 'SharedServices1'... 05/21/2010 12:23:07.14 OWSTIMER.EXE (0x0884) 0x106C Search Server Common MS Search Administration 8dvl Medium Search application '3c6751cc-37b0-470a-bfa2-bfd0b5635fe1': Provision start addresses in default content source. 05/21/2010 12:23:07.15 OWSTIMER.EXE (0x0884) 0x106C Search Server Common MS Search Administration 7hmh High exception in SearchUpgradeProvisioner Keyword Config System.InvalidOperationException: jobServerSearchServiceInstance is null at Microsoft.Office.Server.Search.Administration.SearchUpgradeProvisioner..ctor(SearchServiceInstance searchServiceInstance) at Microsoft.Office.Server.Search.Administration.OSSPrimaryGathererProject.ProvisionContentSources() 05/21/2010 12:23:29.19 OWSTIMER.EXE (0x0884) 0x0FFC SharePoint Portal Server Business Data 79bv High Initiating BDC Cache Invalidation Check in AppDomain 'DefaultDomain' 05/21/2010 12:23:29.19 OWSTIMER.EXE (0x0884) 0x0FFC SharePoint Portal Server Business Data 79bx High Completed BDC Cache Invalidation Check in AppDomain 'DefaultDomain' 05/21/2010 12:23:45.84 OWSTIMER.EXE (0x0884) 0x08A8 SharePoint Portal Server SSO 8inc Medium In SSOService::Synch(), sso database conn string: 05/21/2010 12:23:50.80 OWSTIMER.EXE (0x0884) 0x0F14 Excel Services Excel Services Administration 8tqi Medium ExcelServerSharedWebApplication.Synchronize: Starting synchronize for instance of Excel Services in SSP 'SharedServices1'. 05/21/2010 12:23:50.80 OWSTIMER.EXE (0x0884) 0x0F14 Excel Services Excel Services Administration 8tqj Medium ExcelServerSharedWebApplication.Synchronize: Successfully synchronized instance of Excel Services in SSP 'SharedServices1'. 05/21/2010 12:23:52.31 w3wp.exe (0x1E40) 0x0980 SharePoint Portal Server Runtime 8gp7 Medium Topology cache updated. (AppDomain: /LM/W3SVC/1963195510/Root-1-129188762904047141)

Read the article
new[n] and delete every location with delete instead the whole chunk with delete[]

- by pmr

Is this valid C++ (e.g. not invoking UB) and does it achieve what I want without leaking memory? valgrinds complains about mismatching free and delete but says "no leaks are possible" in the end. int main() { int* a = new int[5]; for(int i = 0; i < 5; ++i) a[i] = i; for(int i = 0; i < 5; ++i) delete &a[i]; } The reason I'm asking: I have a class that uses boost::intrusive::list and I new every object that is added to that list. Sometimes I know how many objects I want to add to the list and was thinking about using new[] to allocate a chunk and still be able to delete every object on its own with the Disposer-style of boost::intrusive.

Read the article
How to read verbose VC++ linker output

- by Assaf Lavie

Trying to debug some linker errors, I turned on /VERBOSE and I'm trying to make sense of the output. It occurs to me that I really don't know how to read it. For example: 1>Compiling version info 1>Linking... 1>Starting pass 1 1>Processed /DEFAULTLIB:mfc80.lib 1>Processed /DEFAULTLIB:mfcs80.lib 1>Processed /DEFAULTLIB:msvcrt.lib 1>Processed /DEFAULTLIB:kernel32.lib 1>Processed /DEFAULTLIB:user32.lib .... 1>Processed /DEFAULTLIB:libgslcblasMD.lib 1>Searching libraries 1> Searching V:\Src\Solutions\\..\..\\Common\Win32\Lib\PlxApi.lib: 1> Searching ..\..\..\..\out\win32\release\lib\camerageometry.lib: 1> Searching ..\..\..\..\out\win32\release\lib\geometry.lib: 1> Found "public: __thiscall VisionMap::Geometry::Box2d::operator class VisionMap::Geometry::Box2DInt(void)const " (??BBox2d@Geometry@VisionMap@@QBE?AVBox2DInt@12@XZ) 1> Referenced in FocusDlg.obj 1> Loaded geometry.lib(Box2d.obj) 1>Processed /DEFAULTLIB:CGAL-vc80-mt.lib 1>Processed /DEFAULTLIB:boost_thread-vc80-mt-1_33_1.lib What's going on here? I think I understand this bit: 1>Processed /DEFAULTLIB:libgslcblasMD.lib 1>Searching libraries 1> Searching V:\Src\Solutions\\..\..\\Common\Win32\Lib\PlxApi.lib: 1> Searching ..\..\..\..\out\win32\release\lib\camerageometry.lib: 1> Searching ..\..\..\..\out\win32\release\lib\geometry.lib: 1> Found "public: __thiscall VisionMap::Geometry::Box2d::operator class VisionMap::Geometry::Box2DInt(void)const " (??BBox2d@Geometry@VisionMap@@QBE?AVBox2DInt@12@XZ) 1> Referenced in FocusDlg.obj 1> Loaded geometry.lib(Box2d.obj) It's trying to find the implementation of the above operator, which is used somewhere in FocusDlg.cpp, and it finds it in geometry.lib. But what does 1>Processed /DEFAULTLIB:libgslcblasMD.lib mean? What determines the order of symbol resolution? Why is it loading this particular symbol while processing libgslcblasMD.lib which is a 3rd party library? Or am I reading it wrong? It seems that the linker is going through the symbols referenced in the project's various object files, but I have no idea in what order. It then searches the static libraries the project uses - by project reference, explicit import and automatic default library imports; but it does so in an order that, again, seems arbitrary to me. When it finds a symbol, for example in geometry.lib, it then continues to find a bunch of other symbols from the same lib: 1> Searching V:\Src\Solutions\\..\..\\Common\Win32\Lib\PlxApi.lib: 1> Searching ..\..\..\..\out\win32\release\lib\camerageometry.lib: 1> Searching ..\..\..\..\out\win32\release\lib\geometry.lib: 1> Found "public: __thiscall VisionMap::Geometry::Box2d::operator class VisionMap::Geometry::Box2DInt(void)const " (??BBox2d@Geometry@VisionMap@@QBE?AVBox2DInt@12@XZ) 1> Referenced in FocusDlg.obj 1> Loaded geometry.lib(Box2d.obj) 1>Processed /DEFAULTLIB:CGAL-vc80-mt.lib 1>Processed /DEFAULTLIB:boost_thread-vc80-mt-1_33_1.lib 1> Found "public: __thiscall VisionMap::Geometry::Box2DInt::Box2DInt(int,int,int,int)" (??0Box2DInt@Geometry@VisionMap@@QAE@HHHH@Z) 1> Referenced in FocusDlg.obj 1> Referenced in ImageView.obj 1> Referenced in geometry.lib(Box2d.obj) 1> Loaded geometry.lib(Box2DInt.obj) 1> Found "public: virtual __thiscall VisionMap::Geometry::Point3d::~Point3d(void)" (??1Point3d@Geometry@VisionMap@@UAE@XZ) 1> Referenced in GPSFrm.obj 1> Referenced in MainFrm.obj 1> Loaded geometry.lib(Point3d.obj) 1> Found "void __cdecl VisionMap::Geometry::serialize<class boost::archive::binary_oarchive>(class boost::archive::binary_oarchive &,class VisionMap::Geometry::Point3d &,unsigned int)" (??$serialize@Vbinary_oarchive@archive@boost@@@Geometry@VisionMap@@YAXAAVbinary_oarchive@archive@boost@@AAVPoint3d@01@I@Z) 1> Referenced in GPSFrm.obj 1> Referenced in MainFrm.obj 1> Loaded geometry.lib(GeometrySerializationImpl.obj) But then, for some reason, it goes on to find symbols that are defined in other libs, and returns to geometry later on (a bunch of times). So clearly it's not doing "look in geometry and load every symbol that's references in the project, and then continue to other libraries". But it's not clear to me what is the order of symbol lookup. And what's the deal with all those libraries being processed at the beginning of the linker's work, but not finding any symbols to load from them? Does this project really not use anything from msvcrt.lib, kernel32.lib? Seems unlikely. So basically I'm looking to decipher the underlying order in the linker's operation.

Read the article
XSLT 1.0 help with recursion logic

- by DashaLuna

Hello guys, I'm having troubles with the logic and would apprecite any help/tips. I have <Deposits> elements and <Receipts> elements. However there isn't any identification what receipt was paid toward what deposit. I am trying to update the <Deposits> elements with the following attributes: @DueAmont - the amount that is still due to pay @Status - whether it's paid, outstanding (partly paid) or due @ReceiptDate - the latest receipt's date that was paid towards this deposit Every deposit could be paid with one or more receipts. It also could happen, that 1 receipt could cover one or more deposits. For example. If there are 3 deposits: 500 100 450 That are paid with the following receipts: 200 100 250 I want to get the following info: Deposit 1 is fully paid (status=paid, dueAmount=0, receiptNum=3. Deposit 2 is partly paid (status=outstanding, dueAmount=50, receiptNum=3. Deposit 3 is not paid (status=due, dueAmount=450, receiptNum=NAN. I've added comments in the code explaining what I'm trying to do. I am staring at this code for the 3rd day now non stop - can't see what I'm doing wrong. Please could anyone help me with it? :) Thanks! Set up: $deposits - All the available deposits $receiptsAsc - All the available receipts sorted by their @ActionDate Code:  <xsl:variable name="depositsClassified"> <xsl:call-template name="classifyDeposits"> <xsl:with-param name="depositsAll" select="$deposits"/> <xsl:with-param name="receiptsAll" select="$receiptsAsc"/> <xsl:with-param name="receiptCount" select="'1'"/> </xsl:call-template> </xsl:variable>  <xsl:template name="classifyDeposits"> <xsl:param name="depositsAll"/> <xsl:param name="receiptsAll"/> <xsl:param name="receiptCount"/>  <xsl:if test="$depositsAll">  <xsl:variable name="deposit" select="$depositsAll[1]"/>  <xsl:variable name="receiptSum"> <xsl:choose> <xsl:when test="$receiptsAll"> <xsl:value-of select="sum($receiptsAll[position() <= $receiptCount]/@ReceiptAmount)"/> </xsl:when> <xsl:otherwise>0</xsl:otherwise> </xsl:choose> </xsl:variable>  <xsl:variable name="diff" select="$deposit/@DepositTotalAmount - $receiptSum"/> <xsl:choose>  <xsl:when test="($diff > 0) and ($receiptCount < count($receiptsAll))"> <xsl:call-template name="classifyDeposits"> <xsl:with-param name="depositsAll" select="$depositsAll"/> <xsl:with-param name="receiptsAll" select="$receiptsAll"/> <xsl:with-param name="receiptCount" select="$receiptCount + 1"/> </xsl:call-template> </xsl:when>  <xsl:otherwise>  <xsl:apply-templates select="$deposit" mode="defineDeposit"> <xsl:with-param name="diff" select="$diff"/> <xsl:with-param name="receiptNum" select="$receiptCount"/> </xsl:apply-templates>  <xsl:variable name="receiptsUpdatedRTF"> <xsl:for-each select="$receiptsAll"> <xsl:choose>  <xsl:when test="position() < $receiptCount"> <xsl:copy> <xsl:copy-of select="./@*"/> <xsl:attribute name="ReceiptAmount">0</xsl:attribute> </xsl:copy> </xsl:when>  <xsl:when test="position() = $receiptCount"> <xsl:copy> <xsl:copy-of select="./@*"/> <xsl:attribute name="ReceiptAmount"> <xsl:value-of select="format-number($diff, '#.00;#.00')"/> </xsl:attribute> </xsl:copy> </xsl:when>  <xsl:otherwise> <xsl:copy-of select="."/> </xsl:otherwise> </xsl:choose> </xsl:for-each> </xsl:variable> <xsl:variable name="receiptsUpdated" select="msxsl:node-set($receiptsUpdatedRTF)/Receipts"/>  <xsl:call-template name="classifyDeposits"> <xsl:with-param name="depositsAll" select="$deposits[position() != 1]"/> <xsl:with-param name="receiptsAll" select="$receiptsUpdated"/> <xsl:with-param name="receiptCount" select="$receiptCount"/> </xsl:call-template> </xsl:otherwise> </xsl:choose> </xsl:if> </xsl:template>  <xsl:template match="MultiDeposits" mode="defineDeposit"> <xsl:param name="diff"/> <xsl:param name="receiptNum"/> <xsl:choose> <xsl:when test="$diff <= 0"> <xsl:apply-templates select="." mode="addAttrs"> <xsl:with-param name="status" select="'paid'"/> <xsl:with-param name="dueAmount" select="'0'"/> <xsl:with-param name="receiptNum" select="$receiptNum"/> </xsl:apply-templates> </xsl:when> <xsl:when test="$diff = ./@DepositTotalAmount"> <xsl:apply-templates select="." mode="addAttrs"> <xsl:with-param name="status" select="'due'"/> <xsl:with-param name="dueAmount" select="$diff"/> </xsl:apply-templates> </xsl:when> <xsl:when test="$diff < ./@DepositTotalAmount"> <xsl:apply-templates select="." mode="addAttrs"> <xsl:with-param name="status" select="'outstanding'"/> <xsl:with-param name="dueAmount" select="$diff"/> <xsl:with-param name="receiptNum" select="$receiptNum"/> </xsl:apply-templates> </xsl:when> <xsl:otherwise/> </xsl:choose> </xsl:template>  <xsl:template match="MultiDeposits" mode="addAttrs"> <xsl:param name="status"/> <xsl:param name="dueAmount"/> <xsl:param name="receiptNum" select="''"/> <xsl:copy> <xsl:copy-of select="./@*"/> <xsl:attribute name="Status"><xsl:value-of select="$status"/></xsl:attribute> <xsl:attribute name="DueAmount"><xsl:value-of select="$dueAmount"/></xsl:attribute> <xsl:if test="$receiptNum != ''"> <xsl:attribute name="ReceiptDate"> <xsl:value-of select="$receiptsAsc[position() = $receiptNum]/@ActionDate"/> </xsl:attribute> </xsl:if> <xsl:copy-of select="./*"/> </xsl:copy> </xsl:template>

Read the article
How do I set scons system include path

- by Michael Anderson

Using scons I can easily set my include paths: env.Append( CPPPATH=['foo'] ) This passes the flag -Ifoo to gcc However I'm trying to compile with a lot of warnings enabled. In particular with env.Append( CPPFLAGS=['-Werror', '-Wall', '-Wextra'] ) which dies horribly on certain boost includes ... I can fix this by adding the boost includes to the system include path rather than the include path as gcc treats system includes differently. So what I need to get passed to gcc instead of -Ifoo is -isystem foo I guess I could do this with the CPPFLAGS variable, but was wondering if there was a better solution built into scons.

Read the article
Compiling and installing pyactivemq on osx

- by muanis

I'm having a hardtime trying to install pyactivemq (link) on my osx leopard. Following a tutorial (in portuguese) on compiling it ends up ok, but when I run the tests i receive only a crypt message: "Fatal Python error: Interpreter not initialized (version mismatch?)" There is not much information on the web about using pyactivemq on osx, but what I could find is that is something related to wrong linking when boost compiles. I'm running: Mac OS 10.5.8 MacPorts 1.8.2 APR 1.3.9 Xcode 3.1.4 Boost 1.41.0 (installing for python 2.5) Activemq-cpp 2.2.6 pyactivemq 0.1.0 If someone has any info on this it would be helpful

Read the article
Links to official style guides

- by User1

C++ has several types of styles: MFC, Boost, Google, etc. I would like to examine these styles and determine which one is best for my projects, but I want to read from the official style guidebook. Does anyone have an official guide that they typically use? Here are two that I found. I bet there are more: http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml http://www.boost.org/development/requirements.html Note: This is NOT a discussion about which styleis best..only a call for official style guides that people currently use. Please refrain from bashing other style guides that you don't like. Side question: Is there a good tool that can examine source code and tell if it matches a given style guide?

Read the article
A quick design question about C++ container classes in shared memory

- by recipriversexclusion

I am writing a simple wrapper around boost::interprocess's vector container to implement a ring buffer in shared memory (shm) for IPC. Assume that buf is an instance of RingBuffer created in shm. Now, in its ctor, buf itself allocates a private boost::interprocess::vector data member to store values, e.g. m_data. My question is: I think m_data should also be created in shared memory. But it this a necessity? What happens if buf that was created in shm itself, allocates standard memory, i.e. using new. Does this get allocated on the calling process's heap? I don't think buf is allocated there so how come a data member that is private to an object not on a process's heap gets allocated there. I'm confused.

Read the article
C++: what regex library should I use?

- by Stéphane

I'm working on a commercial (not open source) C++ project that runs on a linux-based system. I need to do some regex within the C++ code. (I know: I now have 2 problems.) QUESTION: What libraries do people who regularly do regex from C/C++ recommend I look into? A quick search has brought the following to my attention: 1) Boost.Regex (I need to go read the Boost Software License, but this question is not about software licenses) 2) C (not C++) POSIX regex (#include <regex.h>, regcomp, regexec, etc.) 3) http://freshmeat.net/projects/cpp_regex/ (I know nothing about this one; seems to be GPL, therefore not usable on this project) Thanks.

Read the article
Link error (LNK2019) when including other projects in Visual Studio 2005

- by jules

I am trying to work with several projects on visual studio 2005. I have one project that depends on two others. I have included those two project in the first project solution, and set the dependencies correctly. I get this error when linking the project: 1>server_controller.obj : error LNK2019: unresolved external symbol "public: __thiscall server_communication::TcpServer::TcpServer(class boost::asio::io_service &,struct server_communication::ServerParameters &)" (??0TcpServer@server_communication@@QAE@AAVio_service@asio@boost@@AAUServerParameters@1@@Z) referenced in function "public: __thiscall server_controller::ServerController::ServerController(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (??0ServerController@server_controller@@QAE@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@0@Z) I seems that the symbols can not be found in the other projects, even though there are defined in those projects.

Read the article
How to initialize a static const map in c++?

- by Meloun

Hi, I need just dictionary or asociative array string = int. There is type map C++ for this case. But I need make one map in my class make for all instances(- static) and this map cannot be changed(- const); I have found this way with boost library std::map<int, char> example = boost::assign::map_list_of(1, 'a') (2, 'b') (3, 'c'); Is there other solution without this lib? I have tried something like this, but there are always some issues with map initialization. class myClass{ private: static map<int,int> create_map() { map<int,int> m; m[1] = 2; m[3] = 4; m[5] = 6; return m; } static map<int,int> myMap = create_map(); } thanks

Read the article
Multi-module maven build : different result from parent and from module

- by Albaku

I am migrating an application from ant build to maven 3 build. This app is composed by : A parent project specifying all the modules to build A project generating classes with jaxb and building a jar with them A project building an ejb project 3 projects building war modules 1 project building an ear Here is an extract from my parent pom : <groupId>com.test</groupId> <artifactId>P</artifactId> <packaging>pom</packaging> <version>04.01.00</version> <modules> <module>../PValidationJaxb</module> <-- jar <module>../PValidation</module> <-- ejb <module>../PImport</module> <-- war <module>../PTerminal</module> <-- war <module>../PWebService</module> <-- war <module>../PEAR</module> <-- ear </modules> I have several problems which I think have the same origin, probably a dependency management issue that I cannot figure out : The generated modules are different depending on if I build from the parent pom or a single module. Typically if I build PImport only, the generated war is similar to what I had with my ant build and if I build from the parent pom, my war took 20MB, a lot of dependencies from other modules had been added. Both wars are running well. My project PWebService has unit tests to be executed during the build. It is using mock-ejb which has cglib as dependency. Having a problem of ClassNotFound with this one, I had to exclude it and add a dependency to cglib-nodep (see last pom extract). If I then build only this module, it is working well. But if I build from the parent project, it fails because other dependencies in other modules also had an implicit dependency on cglib. I had to exclude it in every modules pom and add the dependency to cglib-nodep everywhere to make it run. Do I miss something important in my configuration ? The PValidation pom extract : It is creating a jar containing an ejb with interfaces generated by xdoclet, as well as a client jar. <parent> <groupId>com.test</groupId> <artifactId>P</artifactId> <version>04.01.00</version> </parent> <artifactId>P-validation</artifactId> <packaging>ejb</packaging> <dependencies> <dependency> <groupId>com.test</groupId> <artifactId>P-jaxb</artifactId> <version>${project.version}</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate</artifactId> <version>3.2.5.ga</version> <exclusions> <exclusion> <groupId>cglib</groupId> <artifactId>cglib</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>cglib</groupId> <artifactId>cglib-nodep</artifactId> <version>2.2.2</version> </dependency> ... [other libs] ... </dependencies> <build> ... <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-ejb-plugin</artifactId> <configuration> <ejbVersion>2.0</ejbVersion> <generateClient>true</generateClient> </configuration> </plugin> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>xdoclet-maven-plugin</artifactId> ... The PImport pom extract : It depends on both Jaxb generated jar and the ejb client jar. <parent> <groupId>com.test</groupId> <artifactId>P</artifactId> <version>04.01.00</version> </parent> <artifactId>P-import</artifactId> <packaging>war</packaging> <dependencies> <dependency> <groupId>com.test</groupId> <artifactId>P-jaxb</artifactId> <version>${project.version}</version> </dependency> <dependency> <groupId>com.test</groupId> <artifactId>P-validation</artifactId> <version>${project.version}</version> <type>ejb-client</type> </dependency> ... [other libs] ... </dependencies> The PWebService pom extract : <parent> <groupId>com.test</groupId> <artifactId>P</artifactId> <version>04.01.00</version> </parent> <artifactId>P-webservice</artifactId> <packaging>war</packaging> <properties> <jersey.version>1.14</jersey.version> </properties> <dependencies> <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-servlet</artifactId> <version>${jersey.version}</version> </dependency> <dependency> <groupId>com.rte.etso</groupId> <artifactId>etso-validation</artifactId> <version>${project.version}</version> <type>ejb-client</type> </dependency> ... [other libs] ... <dependency> <groupId>org.mockejb</groupId> <artifactId>mockejb</artifactId> <version>0.6-beta2</version> <scope>test</scope> <exclusions> <exclusion> <groupId>cglib</groupId> <artifactId>cglib-full</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>cglib</groupId> <artifactId>cglib-nodep</artifactId> <version>2.2.2</version> <scope>test</scope> </dependency> </dependencies> Many thanks

Read the article
C++ -- typedef "inside" template arguments?

- by redmoskito

Imagine I have a template function like this: template<Iterator> void myfunc(Iterator a, Iterator::value_type b) { ... } Is there a way to declare a typedef for Iterator::valuetype that I can use in the function signature? For example: template< typename Iterator, typedef Iterator::value_type type> void myfunc(Iterator a, type b) { ... } Thus far, I've resorted to using default template arguments and Boost concept checking to ensure the default is always used: template< typename Iterator, typename type = Iterator::value_type > void myfunc(Iterator a, type b) { BOOST_STATIC_ASSERT(( boost::type_traits::is_same< typename Iterator::value_type, type >::value )); ... } ...but it would be nice if there was support in the language for this type of thing.

Read the article
Which C++ graphics library should I use?

- by mspoerr

Hello, I found the following graphics libraries, but I am not sure which one I should use. Maybe there are some more... Graphviz (http://www.graphviz.org/) Boost Graph Library (http://www.boost.org/doc/libs/1_42_0/libs/graph/doc/index.html) Lemon (http://lemon.cs.elte.hu/trac/lemon) igraph (http://igraph.sourceforge.net/introduction.html) What it should do: draw a undirected network map come as header only or static lib for Windows the output format should be user editable Graphviz is the only one I tried so far, but I found no static lib for it, I failed to build it by my own and the documentation could be better. Therefore I looked around and found these other three libs. I would be glad to get some recommendations which lib to choose. Thanks, /mspoerr

Read the article
Which C++ graph library should I use?

- by mspoerr

Hello, I found the following graph libraries, but I am not sure which one I should use. Maybe there are some more... Graphviz (http://www.graphviz.org/) Boost Graph Library (http://www.boost.org/doc/libs/1_42_0/libs/graph/doc/index.html) Lemon (http://lemon.cs.elte.hu/trac/lemon) igraph (http://igraph.sourceforge.net/introduction.html) What it should do: draw a undirected network map come as header only or static lib for Windows the output format should be user editable Graphviz is the only one I tried so far, but I found no static lib for it, I failed to build it by my own and the documentation could be better. Therefore I looked around and found these other three libs. I would be glad to get some recommendations which lib to choose. Thanks, /mspoerr

Read the article
Is this a correct implementation of singleton C++?

- by Kamal

class A{ static boost::shared_ptr<A> getInstance(){ if(pA==NULL){ pA = new A(); } return boost::shared_ptr(pA); } //destructor ~A(){ delete pA; pA=NULL; } private: A(){ //some initialization code } //private assigment and copy constructors A(A const& copy); // Not Implemented A& operator=(A const& copy); // Not Implemented static A* pA; }; A* A::pA = NULL;

Read the article
Detect template presence at compilation time

- by doublep

GCC up to 4.5 doesn't have standard C++0x type trait template has_nothrow_move_constructor. I could use it in my package for optimization, but I don't want to rule out one of the common compilers and don't want to overload configuration with symbols like HAVE_STD_HAS_NOTHROW_MOVE_CONSTRUCTOR. Is it somehow possible to use that template if present and just fall back to copying if not present without using any predefined configuration symbols? I also don't want to depend on Boost, since my library is small and doesn't need Boost for any other reasons. In pseudocode, I need something like: template <typename type> struct has_nothrow_move_constructor_robust : public integral_constant <bool, /* if possible */ has_nothrow_move_constructor <type>::value /* otherwise */ false> { }; Since move constructors are only for C++0x anyway, I don't mind using other C++0x features for the above definition, if at all possible.

Read the article
Finding if all elements in a vector<string> are in a string

- by devin

I have a vector and I need to see if all the strings in that vector are substrings of another given string. eg vector<string> v; v.push_back("str1"); v.push_back("str2"); string s1 = "str1, str2, str3"; string s2 = "str1, str3"; Is there a way to get true from s1 and false from s2 without looping over the vector? Also, note that due to my environment, I can't use boost. I think if I had boost, I could do this.

Read the article
How to interrupt a waiting C++0x thread?

- by doublep

I'm considering to use C++0x threads in my application instead of Boost threads. However, I'm not sure how to reimplement what I have with standard C++0x threads since they don't seem to have an interrupt() method. My current setup is: a master thread that manages work; several worker threads that carry out master's commands. Workers call wait() on at least two different condition variables. Master has a "timed out" state: in this case it tells all workers to stop and give whatever result they got by then. With Boost threads master just uses interrupt_all() on a thread group, which causes workers to stop waiting. In case they are not waiting at the moment, master also sets a bool flag which workers check periodically. However, in C++0x std::thread I don't see any replacement for interrupt(). Do I miss something? If not, how can I implement the above scheme so that workers cannot just sleep forever?

Read the article
Multiset of shared_ptrs as a dynamic priority queue: Concept and practice

- by Sarah

I was using a vector-based priority queue typedef std::priority_queue< Event, vector< Event >, std::greater< Event > > EventPQ; to manage my Event objects. Now my simulation has to be able to find and delete certain Event objects not at the top of the queue. I'd like to know if my planned work-around can do what I need it to, and if I have the syntax right. I'd also like to know if dramatically better solutions exist. My plan is to make EventPQ a multiset of smart pointers to Event objects: typedef std::multi_set< boost::shared_ptr< Event > > EventPQ; I'm borrowing functions of the Event class from a related post on a multimap priority queue. // Event.h #include <cstdlib> using namespace std; #include <set> #include <boost/shared_ptr.hpp> class Event; typedef std::multi_set< boost::shared_ptr< Event > > EventPQ; class Event { public: Event( double t, int eid, int hid ); ~Event(); void add( EventPQ& q ); void remove(); bool operator < ( const Event & rhs ) const { return ( time < rhs.time ); } bool operator > ( const Event & rhs ) const { return ( time > rhs.time ); } double time; int eventID; int hostID; EventPQ* mq; EventPQ::iterator mIt; }; // Event.cpp Event::Event( double t, int eid, int hid ) { time = t; eventID = eid; hostID = hid; } Event::~Event() {} void Event::add( EventPQ& q ) { mq = &q; mIt = q.insert( boost::shared_ptr<Event>(this) ); } void Event::remove() { mq.erase( mIt ); mq = 0; mIt = EventPQ::iterator(); } I was hoping that by making EventPQ a container of pointers, I could avoid wasting time copying Events into the container and avoid accidentally editing the wrong copy. Would it be dramatically easier to store the Events themselves in EventPQ instead? Does it make more sense to remove the time keys from Event objects and use them instead as keys in a multimap? Assuming the current implementation seems okay, my questions are: Do I need to specify how to sort on the pointers, rather than the objects, or does the multiset automatically know to sort on the objects pointed to? If I have a shared_ptr ptr1 to an Event that also has a pointer in the EventPQ container, how do I find and delete the corresponding pointer in EventPQ? Is it enough to .find( ptr1 ), or do I instead have to find by the key (time)? Is the Event::remove() sufficient for removing the pointer in the EventPQ container? There's a small chance multiple events could be created with the same time (obviously implied in the use of multiset). If the find() works on event times, to avoid accidentally deleting the wrong event, I was planning to throw in a further check on eventID and hostID. Does this seem reasonable? (Dumb syntax question) In Event.h, is the declaration of dummy class Event;, then the EventPQ typedef, and then the real class Event declaration appropriate? I'm obviously an inexperienced programmer with very spotty background--this isn't for homework. Would love suggestions and explanations. Please let me know if any part of this is confusing. Thanks.

Read the article
pointer delegate in STL set.

- by ananth

hi. Im kinda stuck with using a set with a pointer delegate. my code is as follows: void Graph::addNodes (NodeSet& nodes) { for (NodeSet::iterator pos = nodes.begin(); pos != nodes.end(); ++pos) { addNode(*pos); } } Here NodeSet is defined as: typedef std::set NodeSet; The above piece of code works perfectly on my windows machine, but when i run the same piece of code on a MAC, it gives me the following error: no matching function for call to 'Graph::addNode(const boost::shared_ptr&)' FYI, Node_ptr is of type: typedef boost::shared_ptr Node_ptr; can somebody plz tell me why this is happening?

Read the article

< Previous Page | 202 203 204 205 206 207 208 209 210 211 212 213 | Next Page >